Pulley



(No Model.)

J. L. POTTER. PULLEY.

' No. 476,303. PatentedJune 7,1892.

WITNESSES: mvmmn @msx M W w W I BY ATTOIR N EY me nomus PETERS co.,mow-mum. WASNINGYDN D c UNITED STATES PATENT OFFICE.

JOSEPH L. POTTER, OF FORT WAYNE, INDIANA.

PU LLEY.

SPECIFICATION forming part of Letters Patent No. 476,303, dated June '7,1892. Application filed May 14, 1891. Serial No. 392,780. (No model.)

To all whom it may concern:

Be it known that I, JosnPH L. POTTER, a citizen of the UnitedStates,residing at the city of Fort WVayne, in the county of Allen, inthe State of Indiana, have invented certain new and useful Improvementsin Pulleys; and I do hereby declare that the following is a full, clear,and exact description of the invention, which will enable others skilledin the art to which it appertains to make and use the same, referencebeing had to the accompanying drawing, which forms part of thisspecification.

The accompanying drawing is a side View of the preferred form ofconstruction of my pulley.

The construction is as follows: Two arms 3 and 4 are attached with twoof their ends 7 and 8 near each other, preferably in contact, as shown,to the rim 5 of the pulley in such position that they are inclined fromeach other, preferably at an angle equivalent to that of an equilateraltriangle. The opposite ends 9 and 10 of these fixed arms are attached attwo other points, respectively, on said rims, preferably by dovetailing,as shown. The three points of attachment of said arms to said rim arepreferably equidistant from each other, with the point of jointattachment opposite the removable section 2. Onehalf of the hub isattached or formed upon these arms, preferably integrally in twosections, as shown in the drawing, and there is a small space 11 cut outbetween the arms 3 and 4, extending down to the points of junction 7 and8, so that when the bolt 17 is tightened it will have a tendency to drawthe arms together at that place and clamp not only the shaft 14, butalso have a tendency to draw the ends of the rim 5 firmly against and inengagement with the removable section 2. The removable arm 6, with theother half of the hub attached or formed thereon, preferably integrally,as shown, is so constructed that when placed upon the shaft 14, with theother parts of the hub, formed on the arms 3 and 4, there shall remainthe spaces 13 and 14 between them, so that when the hub and removablearm 6 are drawn. down upon the same by the bolts 15 and '16 the shaft isnot only firmly clamped thereby, but the ends 9 and 10 of the arms 3and. 4 are drawn toward each other, carrying with them the V-shaped endsof the rim 5 against and in engagement with the removable section 2,thereby greatly assisting to firmly hold it in place. It will be seen bythis construction that all the fastening and bracing rods 15, 16, and 17perform, by reason of the spaces 11, 13, and 14, two functions. They notonly clamp the hub firmly upon the shaft 14, but they also mutually aideach other in firmly clamping and holding the removable section 2, thusbracing the entire pulley. There the hub portions of these arms are notformed integrally, such hub portions may be attached to the arms in anyway desired and in such manner as will readily occur to those skilled inthe art; butI prefer the integral construction shown for all pulleys,not exceeding twenty-four inches in diameter.

The operation is as follows: The bolts 15 and 16 are removed and the cap6 takenout. The bolt 1.71s loosened and the removable section 2 isremoved. The pulley is then placed on the shaft, the cap, bolts, andsection 2 are replaced, and the parts are firmly clamped together on theshaft by means of the bolts and the burrs, thereby clamping the shaftand bracing all parts of the pulley together in a new manner and withgreatly-increased efficiency, while the construction of the parts issuch as to preserve the equilibrium of the pulley almost perfectly.

Having thus described my invention, what I claim as new, and desire tosecure by Letters Patent, is-

1. In a pulley having a non-continuous rim and a single removablesection for the admission of a shaft, the combination of two armsadapted to form half of the hub, which arms are attached to three pointsor places in the rim, two of the ends of said arms being adjacent andthe othertwo ends of said arms attached, respectively, in two otherpoints or there being provided. the spaces 11, 13, and 14 16 places, anda removable arm adapted to form between the arms, and the bolts 15, 16,and. 17. the other half of the hub and with said fixed In testimonywhereof I hereunto subscribe arms an equilateral triangle, and means tomy name,in the presence of two Witnesses, this clamp the same upon theshaft. 3d day of March, 1891.

2. In apulley having anon-continuous rim JOSEPH L. POTTER. and a singleremovable section for the ad- Witnesses: mission of the shaft, thecombination of tWo ALBERT BAKER,

arms 3 and 4, the removable arm or cap 6, l H. O. HARTMAN.

